Title of article :
Evolution of the hyperfine parameters of Fe in superconducting LiFeAs as observed by 57Fe Mِssbauer spectroscopy
Author/Authors :
Gao، نويسنده , , W.B. and Lindén، نويسنده , , J. and Wang، نويسنده , , X.C. and Jin، نويسنده , , C.Q. and Tohyama، نويسنده , , T. and Karppinen، نويسنده , , M. and Yamauchi، نويسنده , , H.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
The LiFeAs superconductor is studied by 57Fe Mössbauer spectroscopy to detect possible changes in the hyperfine parameters in terms of temperature upon passing the superconductivity-transition-temperature at ∼16 K. With decreasing temperature, a rather fast growth of spectral area and isomer shift below T c , peaking at ∼6 K was seen. This indicates an increase in the stiffness of the lattice followed by softening.
Keywords :
A. Pnictide superconductors , D. Lattice softening , E. 57Fe Mِssbauer spectroscopy , E. Hyperfine interactions
Journal title :
Solid State Communications
Journal title :
Solid State Communications
